3121210211222 has 16 divisors (see below), whose sum is σ = 4999491331200. Its totient is φ = 1458184969920.

The previous prime is 3121210211221. The next prime is 3121210211227. The reversal of 3121210211222 is 2221120121213.

It is a junction number, because it is equal to n+sod(n) for n = 3121210211194 and 3121210211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121210211221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867965447 + ... + 867969042.

It is an arithmetic number, because the mean of its divisors is an integer number (312468208200).

Almost surely, 2^{3121210211222} is an apocalyptic number.

3121210211222 is a deficient number, since it is larger than the sum of its proper divisors (1878281119978).

3121210211222 is a wasteful number, since it uses less digits than its factorization.

3121210211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735934551.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 3121210211222 its reverse (2221120121213), we get a palindrome (5342330332435).

Subtracting from 3121210211222 its reverse (2221120121213), we obtain a palindrome (900090090009).

The spelling of 3121210211222 in words is "three trillion, one hundred twenty-one billion, two hundred ten million, two hundred eleven thousand, two hundred twenty-two".